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I need help with some questions to study them for midterms!

I need help with some questions to study them for midterms!-example-1

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The correct answer is option C.

The acceleration of an object is defined as the time rate of change of velocity. Velocity is a vector and has magnitude and direction. The change velocity may mean either a change in magnitude or change in direction or both.

Thus an object can have acceleration even when the speed is constant. For example, an object in a circular motion.

Thus the correct answer is option C.

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